Pleiades Publishing Ltd

Công bố khoa học tiêu biểu

* Dữ liệu chỉ mang tính chất tham khảo

Sắp xếp:  
Luminescence kinetics of LiNbO3:Yb3+-Er3+, LiNbO3:Er3+, and LiNbO3:Yb3+ crystals under selective excitations in the impurity subsystem
Pleiades Publishing Ltd - Tập 47 - Trang 17-22 - 2012
V. G. Babajanyan, R. B. Kostanyan, P. H. Muzhikyan
The results of investigations of luminescent radiations’ kinetic characteristics for LiNbO3:Yb3+-Er3+, LiNbO3:Er3+, and LiNbO3:Yb3+ crystals under optical excitations at 532 nm and 1064 nm wavelengths are presented. The shapes and times of rise and damping of luminescent signals at 550 nm, 980 nm and 1555 nm wavelengths under selective excitations in the impurity subsystem of the investigated mate...... hiện toàn bộ
Numerical simulation of propagation of a femtosecond optical soliton in a single-mode fiber with allowance for the imaginary part of Raman response
Pleiades Publishing Ltd - Tập 45 Số 6 - Trang 251-257 - 2010
D. L. Hovhannisyan, A. Hovhannisyan, G. D. Hovhannisyan, K. A. Hovhannisyan
Methods of Production the Isotope 67Cu
Pleiades Publishing Ltd - Tập 55 - Trang 183-190 - 2020
G. H. Hovhannisyan, A. V. Stepanyan, E. R. Saryan, L. A. Amirakyan
The nuclear reactions on zinc isotopes leading to the formation of the medical theranostic isotope 67Cu have been investigated. Model calculations were made using the TALYS1.9 code. The results are compared with the published experimental data. The comparison of calculated and experimental data showed a satisfactory agreement in the case of the proton-nuclear reactions. In the case of the calculat...... hiện toàn bộ
Influence of acoustic waves on coherent bremsstrahlung from 20 MeV electrons
Pleiades Publishing Ltd - - 2013
E. A. Mkrtchyan
Investigation of Electroinduced Bremsstrahlung in Water
Pleiades Publishing Ltd - Tập 58 - Trang 129-133 - 2023
V. S. Arakelyan, R. N. Balasanyan, I. G. Grigoryan, P. G. Muzhikyan, R. B. Kostanyan
The phenomenon of electrically induced generation of bremsstrahlung in water was experimentally observed for the first time when water was exposed to electric pulses with steep fronts. The dependence of the X-ray intensity on the frequency of electrical pulses and the magnitude of the potential difference applied to the electrodes in water has been studied. The physical mechanism of X-ray excitati...... hiện toàn bộ
Laser-induced nonlinear orientational effects in azobenzene nematic liquid crystals
Pleiades Publishing Ltd - Tập 46 - Trang 156-159 - 2011
G. S. Gevorgyan, R. B. Alaverdyan, R. S. Hakobyan
Nonlinear optical orientational phenomena induced by laser in BAAB 1005-type nematic liquid crystals are studied experimentally. It is shown that these phenomena in the field of a single-mode laser field are displayed stronger, if the liquid crystal material is pre-irradiated with certain-frequency visible radiation. These phenomena are caused by the trans-cis transition in molecules of azobenzene...... hiện toàn bộ
Synthesis and Structure of Fe-Fe3O4 Nanoparticles with “Core-Shell” Architecture Capsulated in a Graphite-Like Carbon Matrix
Pleiades Publishing Ltd - Tập 56 - Trang 150-153 - 2021
A. T. Gyulasaryan, K. A. Castillo, O. O. Bernal, A. N. Kocharian, N. Sisakyan, G. K. Chilingaryan, A. A. Veligzhanin, J. L. Gray, E. G. Sharoyan, A. S. Manukyan
Nanoparticles of iron (α-Fe) and iron oxide (Fe3O4) with a core-shell structure (α-Fe core, Fe3O4 shell) covered with additional graphite-like carbon layer have been synthesized. The samples were obtained by solid-phase pyrolysis of iron phthalocyanine (FePc) at a pyrolysis temperature of 1000°C, followed by annealing in an oxygen atmosphere at a temperature of 250°C. The composition, structure an...... hiện toàn bộ
Simultaneous recording of two- and four-probe resistive transitions in laser-processed Sr-Ru-O
Pleiades Publishing Ltd - Tập 42 - Trang 298-303 - 2007
A. M. Gulian, V. R. Nikoghosyan, D. Van Vechten, K. S. Wood
To confirm previously reported evidence of high-temperature superconductivity in laser processed Sr-Ru-O, we performed simultaneous two-probe and four-probe resistive measurements, using bar-geometry samples. A superconducting-type transition with an onset at about 250K was recorded in one of the samples, consistent with our previously reported measurements in the X-bridge geometry. Some new data ...... hiện toàn bộ
Characterization of Metal Nanoparticles Aqueous Solution by a Thermoelastic Optical Indicator Microscope
Pleiades Publishing Ltd - Tập 57 - Trang 187-191 - 2022
G. A. Ohanyan, N. G. Margaryan, M. T. Manvelyan, L. A. Odabashyan, B. J. Minasyan, A. J. Movsisyan, R. Zh. Khachatryan, A. Zh. Babajanyan
The aqueous solution with different metal nanoparticles (NPs) characterized by a thermoelastic optical indicator microscope (TEOIM) in microwave range (8–12 GHz). The near-field interaction between radiated microwaves and aqueous solution with Ag, Zn, and Fe NPs prepared by a laser ablation process is sensitive to NPs concentration and structural characteristics in the solution at resonant frequen...... hiện toàn bộ
Analysis of the Hardening Process of Metals, Taking into Account Variations in Structural Parameters
Pleiades Publishing Ltd - Tập 54 - Trang 296-301 - 2019
M. M. Arakelyan, T. A. Arzoyan
The influence of structural parameters (the dislocation density, the presence and concentration of defects, external elastic field, and temperature) on the nature of the hardening process in aluminum single crystals is considered. The macrophenomenon of hardening is represented as a power dependence of the strain resistance on the accumulated deformation, and microphenomena that characterize the m...... hiện toàn bộ
Tổng số: 628   
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 10